US11070400B2 - Method for determining transmission parameters of uplink signal, terminal and network device - Google Patents

Method for determining transmission parameters of uplink signal, terminal and network device Download PDF

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US11070400B2
US11070400B2 US16/672,359 US201916672359A US11070400B2 US 11070400 B2 US11070400 B2 US 11070400B2 US 201916672359 A US201916672359 A US 201916672359A US 11070400 B2 US11070400 B2 US 11070400B2
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srs resource
resource set
terminal
srs
target
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US20200067739A1 (en
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Hai Tang
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
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    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
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    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
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    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
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    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
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    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04L5/00—Arrangements affording multiple use of the transmission path
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    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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    • H04L5/0078—Timing of allocation
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    • H—ELECTRICITY
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
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    • H04L5/0092—Indication of how the channel is divided
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
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    • H04W—WIRELESS COMMUNICATION NETWORKS
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    • H04W72/042—
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    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
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    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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    • H04W72/00—Local resource management
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    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
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    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
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    • H—ELECTRICITY
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    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • a mechanism for transmitting an aperiodic Sounding Reference Signal is introduced, and a base station may trigger a terminal through Downlink Control information (DCI) to transmit an aperiodic SRS.
  • DCI Downlink Control information
  • An SRS is transmitted to estimate uplink channel quality of different frequency bands such that a network device allocates a transmission resource in a relatively good transient channel state to a terminal for uplink signal transmission.
  • Embodiments of the application provide methods for determining a transmission parameter of an uplink signal, a terminal and a network device, to reasonably use an SRS resource and reduce SRS resource waste.
  • the first indication information may be used to indicate the target SRS resource set
  • the operation that the terminal determines the target SRS resource set according to the first indication information and the first SRS resource set may include that: the terminal determines the target SRS resource set from the first SRS resource set according to the first indication information, the target SRS resource set being a subset of the first SRS resource set.
  • the first indication information may be used to indicate a first SRS resource in the first SRS resource set
  • the operation that the terminal determines the target SRS resource set according to the first indication information and the first SRS resource set may include that: the terminal determines the first SRS resource from the first SRS resource set according to the first indication information; and the terminal determines a second SRS resource set corresponding to the first SRS resource as the target resource set according to the first SRS resource and a corresponding relationship between each SRS resource in the first SRS resource set and a second SRS resource set.
  • the first indication information may be used to indicate a second SRS resource in the first SRS resource set
  • the operation that the terminal determines the target SRS resource set according to the first indication information and the first SRS resource set may include that: the terminal determines an index of the second SRS resource in the first SRS resource set according to the first indication information and the first SRS resource set; the terminal determines an index set corresponding to the second SRS resource according to the index of the second SRS resource in the first SRS resource set and a corresponding relationship between an index of an SRS resource in the first SRS resource set and an index set; and the terminal determines that each SRS resources indicated by each index in the index set corresponding to the second SRS resource forms the target SRS resource set.
  • different beams may be adopted for SRS transmission on different SRS resources in the target SRS resource set.
  • the method may further include that: the terminal sends an SRS to the network device on the SRS resource in the first SRS resource set.
  • the operation that the terminal sends the SRS to the network device on the SRS resource in the first SRS resource set may include that: the terminal sends the SRS to the network device on part of antenna ports of the SRS resource in the first SRS resource set.
  • the operation that the terminal determines the first SRS resource set may include that: the terminal receives configuration information sent by the network device, the configuration information being for configuring the first SRS resource set for the terminal.
  • the configuration information may be born in high-layer signaling or Media Access Control (MAC) signaling.
  • MAC Media Access Control
  • the operation that the terminal receives the second indication information sent by the network device may include that: the terminal receives, from the network device, DCI used to schedule the uplink signal, the DCI containing the second indication information.
  • the SRS is sent on the SRS resource in the target SRS resource set for channel estimation, the target SRS resource is determined, and the transmission parameter used for the terminal to transmit the uplink signal is determined according to the target SRS resource, so that improvement in accuracy of the transmission parameter determined by the terminal to transmit the uplink signal is facilitated.
  • the first indication information may be used to indicate a second SRS resource in the first SRS resource set, an index of the second SRS resource in the first SRS resource set may correspond to an index set, and each SRS resource corresponding to each index in the index set corresponding to the second SRS resource may form the target SRS resource set.
  • different beams may be adopted for SRS transmission on different SRS resources in the first SRS resource set.
  • different beams may be adopted for SRS transmission on different SRS resources in the target SRS resource set.
  • the transmission parameter may be a beamforming weight
  • a beamforming weight for SRS transmission on the target SRS resource may be determined as the beamforming weight for transmission of the uplink signal
  • the transmission parameter may be a precoding matrix
  • the method may further include that: the network device sends first PMI information to the terminal, the first PMI information and an antenna port amount of the target SRS resource indicating the precoding matrix of the uplink signal through a mapping relationship among an antenna port amount, PMI information and a precoding matrix.
  • the operation that the network device receives the SRS from the terminal on the SRS resource in the first SRS resource set may include that: the network device receives the SRS from the terminal on the SRS resource in the first SRS resource set, the SRS being a periodic SRS or a quasi-persistent SRS.
  • the operation that the network device receives the SRS from the terminal on the SRS resource in the first SRS resource set may include that: the network device receives the SRS from the terminal on part of antenna ports of the SRS resource in the first SRS resource set.
  • the method may further include that: the network device sends configuration information to the terminal, the configuration information being for configuring the first SRS resource set for the terminal.
  • a third aspect provides a terminal, which includes units configured to execute the method in the first aspect.
  • a fourth aspect provides a network device, which includes units configured to execute the method in the second aspect.
  • a fifth aspect provides a terminal, which includes a memory, a processor, an input/output interface and a communication interface.
  • the memory, the processor, the input/output interface and the communication interface form communication connections, the memory is configured to store an instruction, the processor is configured to execute the instruction stored in the memory, and when the instruction is executed, the processor executes the method in the first aspect through the communication interface and controls the input/output interface to receive input data and information and output data such as an operation result.
  • An eighth aspect provides a computer program product including an instruction, which runs on a computer to enable the computer to execute the method in each aspect.
  • FIG. 1 is a wireless communication system 100 to which the embodiments of the application are applied.
  • FIG. 3 is a schematic flowchart of a method for determining a transmission parameter of an uplink signal according to an embodiment of the application.
  • FIG. 5 is a schematic block diagram of a terminal according to another embodiment of the application.
  • FIG. 6 is a schematic block diagram of a network device according to an embodiment of the application.
  • the wireless communication system 100 may include multiple network devices, and there may be other number of terminals, except two terminals, in coverage of each network device. There are no limits made thereto in the embodiments of the application.
  • the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity. There are no limits made thereto in the embodiments of the application.
  • the terminal device may include, but not limited to, a Mobile Station (MS), a mobile terminal, a mobile telephone, User Equipment (UE), a handset, portable equipment and the like.
  • the terminal device may communicate with one or more core networks through a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the terminal device may be a mobile phone (or called a “cell” phone), a computer with a wireless communication function and the like.
  • the terminal device may also be a portable, pocket, handheld, computer-embedded or vehicle-mounted mobile device.
  • the network device may be an access network device and, for example, may be a base station, a Transmit and Receive Point (TRP) or an access point.
  • the base station may be a Base Transceiver Station (BTS) in the GSM or CDMA, may also be a NodeB in WCDMA, may also be an Evolved Node B (eNB or e-NodeB) in LTE or may further be a gNB in NR or 5G.
  • BTS Base Transceiver Station
  • eNB Evolved Node B
  • gNB gNodeB
  • SRSs include periodic SRSs and quasi-persistent SRSs.
  • a periodic SRS may be continuously transmitted on a periodic SRS resource.
  • a terminal may be controlled through activation and deactivation signaling to start or stop periodically transmitting the SRS.
  • FIG. 2 is a schematic flowchart of a method for determining a transmission parameter of an uplink signal according to an embodiment of the application. The method shown in FIG. 2 includes the following operations.
  • a terminal determines a first SRS resource set.
  • the first SRS resource set includes at least one SRS resource, and the SRS resource may be a transmission resource configured to transmit an SRS.
  • Different beams are adopted for SRS transmission on different SRS resources in the first SRS resource set.
  • the terminal receives first indication information sent by a network device, the first indication information being used to instruct the terminal to transmit an aperiodic SRS.
  • the first indication information may be determined as a triggering instruction of triggering the terminal to transmit the aperiodic SRS.
  • the terminal determines a target SRS resource set according to the first indication information and the first SRS resource set.
  • Different beamforming weights are adopted for sending SRSs on different SRS resources in the target SRS resource set.
  • the first indication information is used to indicate the target SRS resource set
  • the operation 230 may include that: the terminal determines the target SRS resource set from the first SRS resource set according to the first indication information, the target SRS resource set being a subset of the first SRS resource set.
  • the operation that the terminal determines the target SRS resource set from the first SRS resource set according to the first indication information may refer to that the terminal may select from the first SRS resource set a transmission resource belonging to the target SRS resource set according to the target SRS resource set indicated by the first indication information.
  • the first indication information may indicate the target SRS resource set through a bitmap.
  • Each bit in the bitmap may correspond to an SRS resource, or each bit in the bitmap may correspond to an SRS resource region.
  • the first indication information may also indicate the target SRS resource set through an index of an SRS resource in the first SRS resource set.
  • the first indication information is used to indicate a second SRS resource in the first SRS resource set
  • the operation 230 may include that: the terminal determines an index of the second SRS resource in the first SRS resource set according to the first indication information and the first SRS resource set; the terminal determines an index set corresponding to the second SRS resource according to the index of the second SRS resource in the first SRS resource set and a corresponding relationship between an index of an SRS resource in the first SRS resource set and an index set; and the terminal determines that SRS resources indicated by indexes in the index set corresponding to the second SRS resource form the target SRS resource set.
  • the index of the first SRS resource in the first SRS resource set is k
  • the index set corresponding to the index k is ⁇ k, k+1, k+2, k+3 ⁇
  • the terminal may determine the SRS resource in the second SRS resource set according to each index in the index set.
  • the corresponding relationship between the index of the SRS resource in the first SRS resource set and the index set may be pre-configured for the terminal by the network device, or may also be predetermined by the network device and the terminal through a communication protocol. There are no limits made thereto in the embodiment of the application.
  • the terminal sends the aperiodic SRS to the network device on an SRS resource in the target SRS resource set.
  • the terminal receives second indication information sent by the network device, the second indication information being used to indicate a target SRS resource in the target SRS resource set.
  • the network device may determine a SRS resource for transmitting a signal better in the target SRS resource set as the target SRS resource according to the aperiodic SRS sent by the terminal in the target SRS resource set, and may indicate the SRS resource to the terminal through the second indication information.
  • the transmission parameter may include at least one of the following parameters: a beamforming weight, precoding indication information, an antenna panel for transmission of an uplink signal, an antenna port for transmission of an uplink signal, a layer number for uplink transmission, a modulation and coding scheme for uplink transmission and the like.
  • a beamforming weight a weight for transmission of an uplink signal
  • an antenna port for transmission of an uplink signal
  • a layer number for uplink transmission
  • a modulation and coding scheme for uplink transmission and the like.
  • the SRS is sent on the SRS resource in the target SRS resource set for channel estimation, the target SRS resource is determined, and the transmission parameter used for the terminal to transmit the uplink signal is determined according to the target SRS resource, so that improvement in accuracy of the transmission parameter determined by the terminal to transmit the uplink signal is facilitated.
  • the transmission parameter is a beamforming weight
  • the operation 260 may include that: the terminal determines a beamforming weight for SRS transmission on the target SRS resource as the beamforming weight for transmission of the uplink signal.
  • the network device may determine the SRS resource for transmitting a signal better in the target SRS resource set as the target SRS resource according to the aperiodic SRS sent by the terminal in the target SRS resource set.
  • Determining the beamforming weight for SRS transmission on the target SRS resource as the beamforming weight for transmission of the uplink signal is favorable for improving the accuracy of the beamforming weight determined by the terminal to transmit the uplink signal and, meanwhile, obtaining uplink CSI on the basis of the selected beamforming weight.
  • the transmission parameter is a precoding matrix
  • the operation 260 may include that: the terminal receives first Precoding Matrix Indicator (PMI) information sent by the network device; and the terminal determines the precoding matrix of the uplink signal through a mapping relationship among an antenna port amount, PMI information and a precoding matrix according to an antenna port amount of the target SRS resource and the first PMI information.
  • PMI Precoding Matrix Indicator
  • the method may further include that: the terminal sends an SRS to the network device on the SRS resource in the first SRS resource set.
  • the operation that the terminal transmits the SRS on the SRS resource in the first SRS resource set may include that: the terminal transmits the SRS on the SRS resource in the first SRS resource set, the SRS being a periodic SRS or a quasi-persistent SRS.
  • time occupied by each period during which the terminal periodically sends the SRS on the SRS resource in the first SRS resource set may be relatively long, that is, the terminal is not required to frequently send the SRS on the SRS resource in the first SRS resource set, so that the target SRS resource set may be selected with a relatively low resource overhead.
  • the operation that the terminal sends the SRS to the network device on the SRS resource in the first SRS resource set may include that: the terminal sends the SRS to the network device on part of antenna ports of the SRS resource in the first SRS resource set.
  • the SRS is transmitted on part of antenna ports of the SRS resource in the first SRS resource set, so that the resource overhead for SRS transmission is reduced.
  • FIG. 3 is a schematic flowchart of a method for determining a transmission parameter of an uplink signal according to an embodiment of the application. The method shown in FIG. 3 includes the following operations.
  • a network device receives an SRS from a terminal on an SRS resource in a first SRS resource set.
  • the network device determines first indication information according to the SRS, the first indication information being further configured to determine a target SRS transmission resource.
  • the network device sends second indication information to the terminal, the second indication information being used to indicate the target SRS resource in the target SRS resource set and the target SRS resource being configured to determine the transmission parameter used for the terminal to transmit the uplink signal.
  • the terminal may determine the transmission parameter used to transmit the uplink signal according to the target SRS resource, so that the condition in a conventional art that an SRS resource may only be configured to transmit an SRS to estimate a channel state is avoided, the SRS resource may be reasonably used, and SRS resource waste is avoided.
  • the SRS is sent on the SRS resource in the target SRS resource set for channel estimation, the target SRS resource is determined, and the transmission parameter used for the terminal to transmit the uplink signal is determined according to the target SRS resource, so that improvement in accuracy of the transmission parameter determined by the terminal to transmit the uplink signal is facilitated.
  • the first indication information is used to indicate a first SRS resource in the first SRS resource set, each SRS resource in the first SRS resource set corresponds to a second SRS resource set, and the second SRS resource set corresponding to the first SRS resource is the target SRS resource set.
  • different SRS resources in the first SRS resource set correspond to different second SRS resource sets.
  • the transmission parameter is a precoding matrix
  • the method may further include that: the network device sends first PMI information to the terminal.
  • the first PMI information and an antenna port amount of the target SRS resource indicate the precoding matrix of the uplink signal through a mapping relationship among an antenna port amount, PMI information and a precoding matrix.
  • the operation that the network device receives the SRS from the terminal on the SRS resource in the first SRS resource set may include that: the network device receives the SRS from the terminal on the SRS resource in the first SRS resource set, the SRS being a periodic SRS or a quasi-persistent SRS.
  • the operation that the network device receives the SRS from the terminal on the SRS resource in the first SRS resource set may include that: the network device receives the SRS from the terminal on part of antenna ports of the SRS resource in the first SRS resource set.
  • the method may further include that: the network device sends configuration information to the terminal, the configuration information being for configuring the first SRS resource set for the terminal.
  • the configuration information may be born in high-layer signaling or MAC signaling.
  • the operation that the network device sends the second indication information to the terminal may include that: the network device sends DCI used to schedule the uplink signal to the terminal, the DCI containing the second indication information.
  • FIG. 4 to FIG. 7 may implement each operation in FIG. 2 and FIG. 3 and will not be elaborated herein for avoiding repetitions.
  • FIG. 4 is a schematic block diagram of a terminal according to an embodiment of the application.
  • the terminal 400 shown in FIG. 4 includes a determination unit 410 , a receiving unit 420 and a sending unit 430 .
  • the determination unit is configured to determine a first SRS resource set.
  • the receiving unit is configured to receive first indication information sent by a network device, the first indication information being used to instruct the terminal to transmit an aperiodic SRS.
  • the determination unit is further configured to determine a target SRS resource set according to the first indication information and the first SRS resource set.
  • the determination unit is further configured to determine a transmission parameter used to transmit an uplink signal according to the target SRS resource.
  • the first indication information is used to indicate the target SRS resource set
  • the determination unit is configured to determine the target SRS resource set from the first SRS resource set according to the first indication information, the target SRS resource set being a subset of the first SRS resource set.
  • the first indication information is used to indicate a first SRS resource in the first SRS resource set
  • the determination unit is configured to determine the first SRS resource from the first SRS resource set according to the first indication information and determine a second SRS resource set corresponding to the first SRS resource as the target resource set according to the first SRS resource and a corresponding relationship between each SRS resource in the first SRS resource set and a second SRS resource set.
  • different SRS resources in the first SRS resource set correspond to different second SRS resource sets.
  • the first indication information is used to indicate a second SRS resource in the first SRS resource set
  • the determination unit is configured to determine an index of the second SRS resource in the first SRS resource set according to the first indication information and the first SRS resource set, determine an index set corresponding to the second SRS resource according to the index of the second SRS resource in the first SRS resource set and a corresponding relationship between an index of an SRS resource in the first SRS resource set and an index set, and determine that SRS resources indicated by indexes in the index set corresponding to the second SRS resource form the target SRS resource set.
  • different beams are adopted for SRS transmission on different SRS resources in the first SRS resource set.
  • different beams are adopted for SRS transmission on different SRS resources in the target SRS resource set.
  • the transmission parameter is a beamforming weight
  • the determination unit is configured to determine a beamforming weight for SRS transmission on the target SRS resource as the beamforming weight for transmission of the uplink signal.
  • the determination unit is further configured to receive configuration information sent by the network device, the configuration information being for configuring the first SRS resource set for the terminal.
  • the determination unit 410 may be a processor 520
  • the receiving unit 420 and the sending unit 430 may be a communication interface 540
  • the terminal may further include an input/output interface 530 and a memory 510 , as shown in FIG. 5 .
  • the processor is configured to determine a first SRS resource set.
  • the communication interface is configured to receive first indication information sent by a network device, the first indication information being used to instruct the terminal to transmit an aperiodic SRS, determine a target SRS resource set according to the first indication information and the first SRS resource set, send the aperiodic SRS to the network device on an SRS resource in the target SRS resource set and receive second indication information sent by the network device, the second indication information being used to indicate a target SRS resource in the target SRS resource set.
  • the processor 520 may be a universal Central Processing Unit (CPU), a microprocessor, an Application Specific Integrated Circuit (ASIC) or one or more integrated circuits, and is configured to execute a related program to implement the technical solution provided in the embodiment of the application.
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the receiving unit is configured to receive an SRS from a terminal on an SRS resource in a first SRS resource set.
  • the sending unit is configured to send the first indication information to the terminal, the first indication information being used to instruct the terminal to transmit an aperiodic SRS.
  • the determination unit is further configured to determine a transmission parameter used for the terminal to transmit an uplink signal according to the target SRS resource.
  • the sending unit is further configured to send second indication information to the terminal, the second indication information being used to indicate the target SRS resource in the target SRS resource set and the target SRS resource being configured to determine the transmission parameter used for the terminal to transmit the uplink signal.
  • the first indication information is used to indicate the target SRS resource set, and the target SRS resource set is a subset of the first SRS resource set.
  • the first indication information is used to indicate a first SRS resource in the first SRS resource set, each SRS resource in the first SRS resource set corresponds to a second SRS resource set, and the second SRS resource set corresponding to the first SRS resource is the target SRS resource set.
  • the first indication information is used to indicate a second SRS resource in the first SRS resource set, an index of the second SRS resource in the first SRS resource set corresponds to an index set, and SRS resources corresponding to indexes in the index set corresponding to the second SRS resource form the target SRS resource set.
  • different beams are adopted for SRS transmission on different SRS resources in the first SRS resource set.
  • different beams are adopted for SRS transmission on different SRS resources in the target SRS resource set.
  • the transmission parameter is a beamforming weight
  • a beamforming weight for SRS transmission on the target SRS resource is determined as the beamforming weight for transmission of the uplink signal.
  • the transmission parameter is a precoding matrix
  • the sending unit is further configured to send first PMI information to the terminal.
  • the first PMI information and an antenna port amount of the target SRS resource indicate the precoding matrix of the uplink signal through a mapping relationship among an antenna port amount, PMI information and a precoding matrix.
  • the receiving unit is further configured to receive the SRS from the terminal on the SRS resource in the first SRS resource set, the SRS being a periodic SRS or a quasi-persistent SRS.
  • the receiving unit is further configured to receive the SRS from the terminal on part of antenna ports of the SRS resource in the first SRS resource set.
  • the sending unit is further configured to send configuration information to the terminal, the configuration information being for configuring the first SRS resource set for the terminal.
  • the determination unit 620 may be a processor 720
  • the receiving unit 610 and the sending unit 630 may be a communication interface 740
  • the network device may further include an input/output interface 730 and a memory 710 as shown in FIG. 7 .
  • FIG. 7 is a schematic block diagram of a network device according to another embodiment of the application.
  • the network device 700 shown in FIG. 7 may include a memory 710 , a processor 720 , an input/output interface 730 and a communication interface 740 .
  • the memory 710 , the processor 720 , the input/output interface 730 and the communication interface 740 may be connected through an internal connecting path.
  • the memory 710 is configured to store an instruction.
  • the processor 720 is configured to execute the instruction stored in the memory 720 to control the input/output interface 730 to receive input data and information and output data such as an operation result and control the communication interface 770 to send a signal.
  • the communication interface is configured to receive an SRS from a terminal on an SRS resource in a first SRS resource set.
  • the processor is configured to determine first indication information according to the SRS, the first indication information being further configured to determine a target SRS transmission resource.
  • the communication interface is further configured to send the first indication information to the terminal, the first indication information being used to instruct the terminal to transmit an aperiodic SRS, and receive the aperiodic SRS from the terminal on an SRS resource in a target SRS resource set.
  • the processor is further configured to determine a transmission parameter used for the terminal to transmit an uplink signal according to the target SRS resource.
  • the communication interface is further configured to send second indication information to the terminal, the second indication information being used to indicate the target SRS resource in the target SRS resource set and the target SRS resource being configured to determine the transmission parameter used for the terminal to transmit the uplink signal.
  • the processor 720 may adopt a universal CPU, a microprocessor, an ASIC or one or more integrated circuits, and is configured to execute a related program to implement the technical solution provided in the embodiment of the application.
  • the communication interface 740 uses, for example, but not limited to, a transceiver device such as a transceiver to implement communication between the terminal 700 and another device or a communication network.
  • a transceiver device such as a transceiver to implement communication between the terminal 700 and another device or a communication network.
  • the memory 710 may include a read-only memory and a random access memory and provides an instruction and data for the processor 720 .
  • a part of the processor 720 may further include a nonvolatile RAM.
  • the processor 720 may further store information of a device type.
  • each operation of the method may be completed by an integrated logic circuit of hardware in the processor 720 or an instruction in a software form.
  • the method for determining a transmission parameter of an uplink signal in the embodiments of the application may be directly executed and completed by a hardware processor or executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in this field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or electrically erasable programmable read-only memory and a register.
  • the storage medium may be located in the memory 710 .
  • the processor 720 may read information in the memory 710 and complete the operations of the method in combination with hardware. No more detailed descriptions will be made herein to avoid repetitions.
  • B corresponding to A represents that B is associated with A and that B may be determined according to A. It is also to be understood that determining B according to A does not mean that B is determined only according to A but that B may also be determined according to A and/or other information.
  • a magnitude of a sequence number of each process does not mean an execution sequence and the execution sequence of each process should be determined by its function and an internal logic and should not form any limit to an implementation process of the embodiments of the application.
  • the units described as separate parts may or may not be physically separated, and parts displayed as units may or may not be physical units, and namely may be located in the same place, or may also be distributed to multiple network units. Part or all of the units may be selected to achieve the purpose of the solutions of the embodiments according to a practical requirement.
  • each functional unit in each embodiment of the application may be integrated into a processing unit, each unit may also physically exist independently, and two or more than two units may also be integrated into a unit.
  • the embodiments may be implemented completely or partially through software, hardware, firmware or any combination thereof.
  • the embodiments may be implemented completely or partially by a computer program product.
  • the computer program product may include one or more computer instructions.
  • the computer may be a universal computer, a dedicated computer, a computer network or another programmable device.
  • the computer instruction may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instruction may be transmitted from a website, computer, server or data center to another website, computer, server or data center in a wired (for example, coaxial cable, optical fiber and Digital Subscriber Line (DSL)) or wireless (for example, infrared, wireless and microwave) manner.
  • the computer-readable storage medium may be any available medium readable for the computer or a data storage device, such as a server and a data center, including one or more integrated available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk and a magnetic tape), an optical medium (for example, a Digital Video Disc (DVD)), a semiconductor medium (for example, a Solid State Disk (SSD)) or the like.

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Publication number Priority date Publication date Assignee Title
US11356300B2 (en) * 2019-08-02 2022-06-07 Qualcomm Incorporated Sounding reference signal configuration for supporting virtual and non-virtual port sounding

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EP3611979A1 (en) 2020-02-19
CN110574458A (zh) 2019-12-13
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WO2018201402A1 (zh) 2018-11-08
IL270383B1 (ko) 2023-02-01
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IL270383A (ko) 2019-12-31
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AU2017412458A1 (en) 2019-11-28
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PH12019502474A1 (en) 2020-07-20
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MX2019013114A (es) 2019-12-16
KR102365905B1 (ko) 2022-02-21
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EP3611979B1 (en) 2021-02-17
US20200067739A1 (en) 2020-02-27

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